Electric regulation.



J. L. CREVELFNG.

ELECTRIC REGULATION.

APPLICATION man FEB. 16. 1912. RENEWED JULY 6.19l8.

1,293,729, Patented Feb.11,1919

EDEN L. CEEVELKNG, GTE NE" YORK, N. LEGETENG COTJIYAN'EZ. 1%. 0011130 ELECTRIC REG'ULATIGN.

Application filed Febriiary 18,

To all whom it may concern:

l ie it known that l. Join l1. CRE'VELIXG. a resident of Few York, the. county and State of New York, have invenleil certain new and useful lniprm'eineuts in Electric Regulation. as set forth in the annexed. specification and drawing forming a part thereof.

My invention pertains i'o ilnn class of eleelrie regulation wherein it is (iesireil lo autoinaticaliy reculaie a dynamo or generator in a precle ,ruiinecl manner.

As my invention particulaiip applicahle to systems of elecfrie. (lisirihution wherein a generator driven at variable speeds used to charge a storage. haiiery aml oper ate larnps or other l'mnsla'iing devices. it will be described xvii-1 reference i0 such system.

The drawing is a diagram tai-ion of one type of system essentials of my invention.

in the drawing, 1 represents a dynamo or generator pi'ovidecllwiih thc usual field coil 2 having in series l'hercwitli a regulating element 3, in this instance SlLOWIT-ZXS a carbon pile resistance. is a lever normally drawn in an upward direction as by ihe spring 5, adjustable as by the screw 6. the said spring 5 tending to compress "elie ea. bons 3 and lower the resistance thereof. '1 is a core of magnetic niaierial carried by the lever and thus it will be obvious that motion imparted to the Siliii core may regulate the generator. 8 is the positive lcacl of the. generator aini is carried to the positive side of the storage lnnber y fl and lamps or other transla iing devices indicated at 16. The negative ierniinals of the irenslai-ing devices 10 are connected with ihe Wire Iii which is carried to one terminal 12 of the 'autoinatic switch 13, having its opposite terminal .14 connected Wl'iil the negative brush of inc generator through lead 15. The negative sideof the storage battery is connected with one side o'i'tlie solenoid 16, the opposite side of which is connected as by the-wire. 17 with one side of the sclcnoicl 18, the opposite side o'fwhicn isconneo'izccl with the Wire 11 as inclicaced. The autofilil'lLlC switch is preferably one arlapteci to open and close a. genera'i circuit when the voiiege of 5 generator is very close to catc ry enci, as no: i'ous anio i i purpose well.

Specification of Letters Patent.

1M2. Serial E0. 878.573. Renewed Zi'n'ry 8. i818. Seyial l-To.

-j\isial)le resistance :26. the nial solen known in the art. the presence of one the Well known variety inclica'l'cel c110.- gg'rauunatically merely. ll?) 1 a nel'ie material so dispos d with reg .0 c; glZilllUn U5. L1

iris 1' 1e 26 and 2 solenoid 1 5 that euei an eoniaciinenihe ezrr jnsiahle spring no the core 1 anil nicin'oei" wariil and in cause ele i101 hein'een the. Contact through .ij-le contact tween the eonla'ct members 521 member :21. The members 23 z with the soleno d i and having in 2:") snrronmii series therewith Hm being connected across the g n through the coniaci' lllillilHFL able resisiance 2G, The coninei's closed by members 23. siiori c 18 as inciicaied. 1 main snitch l a csireil, iiini' when open manne- (he SW-iffiii is open an plying he entire current i devices.

An operation of my invention *iialiy as foliows:

E1 the gcncr or he below that oi niatic snitch ini'liccc 13 in the d awing ii i i e c e a e-o? wiii fio ii-the c 2 and SlSLi1l1C@ 3 and cause the 'ene i to build up upon increases in Well known manner and current wii through the coil 25 as ihe contacts 23 be connected by The member 20, and the cur rent in the coii 25 w'ili bend to draw the core 7 ciownwardiy againsi the action cspring 5 anti increase L and if the voltage be suflicient, current will adjust ,the spring noid 16, I so adjust the spring 22' that any be supplied to the battery through coil 16, coil 18 being shunted out through contacts 2421. If the speed of the generator be now increased until its voltage is the maxi-;

increase above the desired maximum output will cause the solenoid 16 to lift the core 19 and break the contacts at 23 and 24. The breaking of the contacts at 23 will render the C011 25 inoperative and the breaking of the contacts at 24 will open the shunt around the coil 18 and cause the generator current to the battery to pass through said coil insuch manner that the generator'is now current re ulated instead of voltage regulated as be ore and the desired maximum charging current to the battery through the coil 18 will not be exceeded, regardless of how low a voltage may be necessary to cause this current. It now for any cause the current in the coil 16 shall "fall to a minimum amount, which maybe readily adjusted, the spring 22 will cause the contacts 23 and 24 to be. reconnected and the generator will be voltage regulated as beore.

From the foregoing;- it will be obvious that I have produced a system wherein the generator is voltage regulated unless the desired voltage will cause too great a current to be delivered to the battery and then the generator regulator is automatically shifted to become a current regulator instead of a' voltage regulator.

I do not wish in any way to limit my-v self to the exact details or mode of operation set forth in this specification for it will be obvious that wide departure may be made in the way of details Without departing from the spirit and scope of my invention whichis as set forth in the following claims:

1. The combination with a storage battery .and a generator, of means for regulating the generator, operating means for controlling said regulating means responsive to voltage fluctuations, operating'means for con trolling said regulating means responsive to current fluctuations and means responsive to the current through the batteryfor rendering one of said operating means operative and the other inoperative.

2. The combinatioh with a" storage bat tery and a generator, of regulating means for the generator, voltage responsive operating means for said regulating means, current responsive operating means for the regulating means and means responsive to the current through-the battery for deregulating means responsive to voltage fluc-- tuations, operating means for the regulating means responsive to current fluctuations and means whereby the current supplied to the battery by the generator renders one of said operating means operative and the other inoperative. r

5. The combination with a storage battery and a generator, of means for regulating the generator, operating means controlling the regulating means responsive to voltage fluctuations, operating means for controlling the regulating means responsive to current fluctuations, means whereby the operating means are rendered alternately operative and inoperative, and battery current controlled means for governing the last said means. 1

6. The combination with-a'storage battery, a generator and means for regulating the generator, of means for operating the regulating means responsive to voltage fluctuations, means for operating the regulating means in response tocurrent fluctuations 7. The combination witha storage battery and a. generator, of mea s for regulating the generator, controlling means therefor comprising a coil responsive to voltage fluctua tions and a coil responsive to current fiuctuations and automatic means responsive to current fluctuations throughthe battery for controlling the operation of said coils.

8. The combination with a storage battery and a generator, of means for controlling the generator, controlling means therefor comprising a coil responsive to voltage'fiuctuations and a coil responsive to current fluctuations and automatic means responsive to current fluctuations through the battery for rendering one of said coils operative and the other inoperative.

9. The combination with a storage battery and a generator, of means for regulating the generator, controlling means therefor comprising a coil responsive to voltage fluctuations and a coil responsive to battery current fluctuations and automatic means responsive to current fluctuations through the battery for determining which of said coils shall regulate the generator.

10. The con'ibination with a storage battery, a generator and a circuit fed thereby, of means for regulating the generator, means for operating said regulating means responsive to voltage fluctuations across said circuit, means for operating the regulating means responsive to current fluctuations in the. battery charging circuit and means for controlling both operating means responsive to current fluctuations in said circuit.

11. The combination with a storage battery and a generator, of a regulator for the generator comprising operating means com prchending a coil in shunt to said generator, a coil in series with said generator and battery and means for controlling the operativeness of said coils responsive to battery current fluctuations.

12. The combination with a generator having a field circuit and a battery circuit fed by said generator, of means for controlling the generator comprehending a regulating means in the field circuit, means for affecting said regulating means responsive to voltage fluctuations, means for affecting said regulating means responsive to current fluctuations and means for determining which of said affecting means shall be et i ective in the operation of the regulating means responsive to current fluctuations in said battery circuit supplied by the generator.

13. The combination with a storage battery and a generator; of means for regulat ing the generator; means for controlling said regulating means; and means actuated by the charging current for changing the mode of operation of the controlling means While the char n 03". the battery is in 23 D progresr.

1-11 The combination of a storage batter J and a generator; of means-for regulating the generator; means for controlling said regulating means responsive to voltage fluctuations; means for controlling said regulating means responsive to current fluctuations; andmeans controlled by the current supplied to the battery for rendering the first-named controlling means inoperative, and the second-named controlling means operative, while the charging of the battery is in progress.

JOHN L. CREVELING.

Witnesses rrnroxsn L. Srrnenn, ANNA M. WALL. 

